航天器AIT中心空气霉菌特性研究

通过对中国3个地区的航天器AIT厂房内空气中霉菌进行采集，利用培养法得到纯化菌株53株，通过ITS测序鉴定分属8个属,进一步对这些霉菌的特性进行研究，发现青霉属和曲霉属内不同菌株间的菌落径向生长速率差异较大，研究同时显示不同种属霉菌对消毒剂PHMB的敏感性差异非常大，这些差异将加剧微生物防护与控制的难度。

Characteristics of airborne moulds from spaceflight AIT center

Understanding the species and characteristics of airborne moulds in spacecraft AIT center is of great importance for developing techniques to prevent mould contamination during the assembly and testing process of spacecraft. In this paper, the air samples were collected in three AIT centers located in different areas, and 53 purified strains of mould were acquired using traditional culture based method. ITS sequencing result shows that these strains belong to eight mould genera. Then the characteristics of these mould strains were studied further. The growth rates measurement shows that different strains of Penicillium and Aspergillus differ greatly in their growth rates. In addition, it is found that the sensitivity of different mould strains to disinfectant PHMB is quite different. It implies that the diversity of both growth rate and disinfectant sensitivity will bring difficulties to the prevention and control of microbial contamination.